Possible Archive of Icons that work well with this add-on?

I have been doing some research for the icons and it seems this add-on does not have any quick resource links or goto places to download an icon set. I could potentially spend more time doing each one individually, but to get the basic trophy points, i need some common looking icons we can choose from.

Thank you, I think for base guidelines and graphics of what to make extra rewards or examples would greatly show the value of this addon, its a bit unclear when you first install it where to go to add new trophies and or even what to create as a trophy extra. So anything that helps I think will help round out the product better for you in the long run.